Analysis

  • max time kernel
    186s
  • max time network
    194s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-07-2022 05:13

General

  • Target

    IDCRnINaaEmumCkkklgbtq.dll

  • Size

    512KB

  • MD5

    915aafdf0d410067666248efe8df8fcf

  • SHA1

    744b92941284e1164b608235b19c8f07f9dc6819

  • SHA256

    c5d21d0bab87488027c50dfe072831c77ff7c12f1c8bc0e5e6e3669a90c96ac3

  • SHA512

    93748ff5ff761150b4b32285515a6f7dea0bfe917c9a85e55849474b8b2392eff0e66d3c02395b3c4e4d77ed61aab00e9c0ff2b6bf09ceb99413f123becfed2c

Malware Config

Extracted

Family

dridex

Botnet

22203

C2

51.159.52.196:443

134.209.247.135:6602

194.233.68.48:5228

89.31.56.58:593

rc4.plain
rc4.plain

Signatures

  • Dridex

    Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.

  • Dridex Loader 1 IoCs

    Detects Dridex both x86 and x64 loader in memory.

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\IDCRnINaaEmumCkkklgbtq.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4556
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\IDCRnINaaEmumCkkklgbtq.dll,#1
      2⤵
        PID:4480
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4480 -s 652
          3⤵
          • Program crash
          PID:1636
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4480 -ip 4480
      1⤵
        PID:1968

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/4480-130-0x0000000000000000-mapping.dmp
      • memory/4480-131-0x0000000001080000-0x0000000001086000-memory.dmp
        Filesize

        24KB

      • memory/4480-132-0x00000000757C0000-0x0000000075841000-memory.dmp
        Filesize

        516KB

      • memory/4480-134-0x0000000001080000-0x0000000001086000-memory.dmp
        Filesize

        24KB